The Super Snake is a stock 5.4 with a different blower, Kenne Bell. There are a bunch of GT500's with Whipple's and KB's making 800 rwhp.
To get the 4.6 to 600 rwhp would take a fully build bottom end. It would might be about the same as a built short block prepped for a blower. Put a twin screw on top and you would be close. You'd need a new clutch and fuel pumps too.
__________________ Osiris - '07 Shelby GT500 - Black , Sequentials , DDM 5k HID's ,
Bassani race mufflers , JLT cai , 2.6 pulley , MM Sport Box ,BMR rear end, tri-axe w/ hurst stick & ball , Afco HE & IC res tank |